1、 Suitable for long hair and short hair . The perm rod set can be used at home, at the salon or even for traveling.2、 This cold wave rod is designed with a cover and a rubber band, which can get clung to your hair easily without any support of pins, what's more, it does not require heating, allowing you to curl your hair in a simple and natural way3、 It is very simple to use the permanent rod and does not require heating; equipped with elasticity, you can curl your hair in a simple and natural way, help you stay away from electric perm and protect your hair.4、 Made of PP material, with great quality and performance, washable, reusable, light, portable, and help to create beautiful wavy hair.5、 Each hair roller has several vents for better saturation, helping you create beautiful hair styling like wavy hair, curly hair, fluffy hair etc.